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运用瓦斯流动理论和岩土力学相关理论,研究深部煤层受采动影响后渗透特性变化情况及规律。依据淮南矿区某矿井地质情况,通过现场实测瓦斯基础参数,建立数学模型、实验室数值模拟等手段,综合分析钻孔瓦斯流量衰减规律,确定了研究矿井煤层钻孔有效影响半径和合理抽放时间,为实现煤与瓦斯安全高效共采提供了依据。
Using the theory of gas flow and related theories of geotechnical mechanics, this paper studies the changes of percolation characteristics and laws of deep coal seams affected by mining. According to the geological conditions of a mine in Huainan mining area, through the on-the-spot measurement of gas foundation parameters, establishment of mathematical model and laboratory numerical simulation, comprehensively analyzed the attenuation law of gas flow in borehole and determined the effective influence radius and reasonable drainage time , Provided the basis for safe and efficient co-mining of coal and gas.